Commit | Line | Data |
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50641945 | 1 | /* Parser for linespec for the GNU debugger, GDB. |
05ff989b | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
7b6bb8da | 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
50641945 FN |
6 | |
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
50641945 FN |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
50641945 FN |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
c5f0f3d0 FN |
24 | #include "frame.h" |
25 | #include "command.h" | |
50641945 FN |
26 | #include "symfile.h" |
27 | #include "objfiles.h" | |
0378c332 | 28 | #include "source.h" |
50641945 | 29 | #include "demangle.h" |
c5f0f3d0 FN |
30 | #include "value.h" |
31 | #include "completer.h" | |
015a42b4 | 32 | #include "cp-abi.h" |
12907978 | 33 | #include "cp-support.h" |
c38da1af | 34 | #include "parser-defs.h" |
fe898f56 | 35 | #include "block.h" |
d2630e69 | 36 | #include "objc-lang.h" |
b9362cc7 | 37 | #include "linespec.h" |
05ff989b | 38 | #include "exceptions.h" |
53c5240f | 39 | #include "language.h" |
dc67126b NR |
40 | #include "interps.h" |
41 | #include "mi/mi-cmds.h" | |
bccdca4a | 42 | #include "target.h" |
94af9270 | 43 | #include "arch-utils.h" |
c00f8484 KS |
44 | #include <ctype.h> |
45 | #include "cli/cli-utils.h" | |
50641945 | 46 | |
1777feb0 | 47 | /* Prototypes for local functions. */ |
50641945 | 48 | |
44fe14ab DC |
49 | static void initialize_defaults (struct symtab **default_symtab, |
50 | int *default_line); | |
51 | ||
52 | static struct symtabs_and_lines decode_indirect (char **argptr); | |
53 | ||
0960f083 DC |
54 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
55 | ||
d2630e69 AF |
56 | static struct symtabs_and_lines decode_objc (char **argptr, |
57 | int funfirstline, | |
58 | struct symtab *file_symtab, | |
7efd8fc2 | 59 | struct linespec_result *canonical, |
d2630e69 AF |
60 | char *saved_arg); |
61 | ||
614b3b14 DC |
62 | static struct symtabs_and_lines decode_compound (char **argptr, |
63 | int funfirstline, | |
7efd8fc2 | 64 | struct linespec_result *canonical, |
e8eb7bc5 | 65 | struct symtab *file_symtab, |
614b3b14 | 66 | char *saved_arg, |
58438ac1 | 67 | char *p); |
614b3b14 | 68 | |
e8eb7bc5 KS |
69 | static struct symbol *lookup_prefix_sym (char **argptr, char *p, |
70 | struct symtab *); | |
93d91629 | 71 | |
4224873a | 72 | static struct symtabs_and_lines find_method (int funfirstline, |
7efd8fc2 | 73 | struct linespec_result *canonical, |
4224873a DC |
74 | char *saved_arg, |
75 | char *copy, | |
76 | struct type *t, | |
e8eb7bc5 KS |
77 | struct symbol *sym_class, |
78 | struct symtab *); | |
4224873a | 79 | |
c25c4a8b JK |
80 | static void cplusplus_error (const char *name, const char *fmt, ...) |
81 | ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3); | |
50641945 FN |
82 | |
83 | static int total_number_of_methods (struct type *type); | |
84 | ||
53c5240f | 85 | static int find_methods (struct type *, char *, |
e8eb7bc5 | 86 | enum language, struct symbol **, struct symtab *); |
50641945 | 87 | |
aee8d8ba | 88 | static int add_matching_methods (int method_counter, struct type *t, |
53c5240f | 89 | enum language language, |
aee8d8ba DC |
90 | struct symbol **sym_arr); |
91 | ||
92 | static int add_constructors (int method_counter, struct type *t, | |
53c5240f | 93 | enum language language, |
aee8d8ba DC |
94 | struct symbol **sym_arr); |
95 | ||
50641945 | 96 | static void build_canonical_line_spec (struct symtab_and_line *, |
7efd8fc2 | 97 | char *, struct linespec_result *); |
50641945 FN |
98 | |
99 | static char *find_toplevel_char (char *s, char c); | |
100 | ||
889f28e2 AF |
101 | static int is_objc_method_format (const char *s); |
102 | ||
50641945 | 103 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
7efd8fc2 TT |
104 | int, int, |
105 | struct linespec_result *); | |
50641945 | 106 | |
f3c39e76 | 107 | static struct symtab *symtab_from_filename (char **argptr, |
58438ac1 | 108 | char *p, int is_quote_enclosed); |
f3c39e76 | 109 | |
9ef07c8c TT |
110 | static struct symbol *find_function_symbol (char **argptr, char *p, |
111 | int is_quote_enclosed); | |
112 | ||
84fba31b DC |
113 | static struct |
114 | symtabs_and_lines decode_all_digits (char **argptr, | |
115 | struct symtab *default_symtab, | |
116 | int default_line, | |
7efd8fc2 | 117 | struct linespec_result *canonical, |
88d262ca | 118 | struct symtab *file_symtab, |
84fba31b DC |
119 | char *q); |
120 | ||
14e91ac5 DC |
121 | static struct symtabs_and_lines decode_dollar (char *copy, |
122 | int funfirstline, | |
123 | struct symtab *default_symtab, | |
7efd8fc2 | 124 | struct linespec_result *canonical, |
88d262ca | 125 | struct symtab *file_symtab); |
14e91ac5 | 126 | |
9ef07c8c TT |
127 | static int decode_label (struct symbol *function_symbol, |
128 | char *copy, struct linespec_result *canonical, | |
0f5238ed TT |
129 | struct symtabs_and_lines *result); |
130 | ||
bca02a8a DC |
131 | static struct symtabs_and_lines decode_variable (char *copy, |
132 | int funfirstline, | |
7efd8fc2 | 133 | struct linespec_result *canonical, |
58438ac1 | 134 | struct symtab *file_symtab); |
bca02a8a | 135 | |
413dad4d DC |
136 | static struct |
137 | symtabs_and_lines symbol_found (int funfirstline, | |
7efd8fc2 | 138 | struct linespec_result *canonical, |
413dad4d DC |
139 | char *copy, |
140 | struct symbol *sym, | |
9ef07c8c TT |
141 | struct symtab *file_symtab, |
142 | struct symbol *function_symbol); | |
413dad4d DC |
143 | |
144 | static struct | |
145 | symtabs_and_lines minsym_found (int funfirstline, | |
146 | struct minimal_symbol *msymbol); | |
147 | ||
1777feb0 | 148 | /* Helper functions. */ |
50641945 | 149 | |
255e7dbf AC |
150 | /* Issue a helpful hint on using the command completion feature on |
151 | single quoted demangled C++ symbols as part of the completion | |
152 | error. */ | |
50641945 | 153 | |
c25c4a8b | 154 | static void |
255e7dbf | 155 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 156 | { |
255e7dbf | 157 | struct ui_file *tmp_stream; |
f3a5f1de | 158 | char *message; |
e0881a8e | 159 | |
255e7dbf AC |
160 | tmp_stream = mem_fileopen (); |
161 | make_cleanup_ui_file_delete (tmp_stream); | |
162 | ||
163 | { | |
164 | va_list args; | |
e0881a8e | 165 | |
255e7dbf AC |
166 | va_start (args, fmt); |
167 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
168 | va_end (args); | |
169 | } | |
170 | ||
50641945 FN |
171 | while (*name == '\'') |
172 | name++; | |
255e7dbf AC |
173 | fprintf_unfiltered (tmp_stream, |
174 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
175 | "(Note leading single quote.)"), | |
176 | name, name); | |
f3a5f1de | 177 | |
759ef836 PA |
178 | message = ui_file_xstrdup (tmp_stream, NULL); |
179 | make_cleanup (xfree, message); | |
180 | throw_error (NOT_FOUND_ERROR, "%s", message); | |
50641945 FN |
181 | } |
182 | ||
183 | /* Return the number of methods described for TYPE, including the | |
1777feb0 | 184 | methods from types it derives from. This can't be done in the symbol |
50641945 FN |
185 | reader because the type of the baseclass might still be stubbed |
186 | when the definition of the derived class is parsed. */ | |
187 | ||
188 | static int | |
189 | total_number_of_methods (struct type *type) | |
190 | { | |
191 | int n; | |
192 | int count; | |
193 | ||
194 | CHECK_TYPEDEF (type); | |
b4ba55a1 | 195 | if (! HAVE_CPLUS_STRUCT (type)) |
50641945 FN |
196 | return 0; |
197 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
198 | ||
199 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
200 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
201 | ||
202 | return count; | |
203 | } | |
204 | ||
e8eb7bc5 KS |
205 | /* Returns the block to be used for symbol searches for the given SYMTAB, |
206 | which may be NULL. */ | |
207 | ||
208 | static struct block * | |
209 | get_search_block (struct symtab *symtab) | |
210 | { | |
211 | struct block *block; | |
212 | ||
213 | if (symtab != NULL) | |
214 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
215 | else | |
216 | { | |
217 | enum language save_language; | |
218 | ||
219 | /* get_selected_block can change the current language when there is | |
220 | no selected frame yet. */ | |
221 | save_language = current_language->la_language; | |
222 | block = get_selected_block (0); | |
223 | set_language (save_language); | |
224 | } | |
225 | ||
226 | return block; | |
227 | } | |
228 | ||
50641945 FN |
229 | /* Recursive helper function for decode_line_1. |
230 | Look for methods named NAME in type T. | |
231 | Return number of matches. | |
232 | Put matches in SYM_ARR, which should have been allocated with | |
233 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
234 | Note that this function is g++ specific. */ | |
235 | ||
236 | static int | |
53c5240f | 237 | find_methods (struct type *t, char *name, enum language language, |
e8eb7bc5 | 238 | struct symbol **sym_arr, struct symtab *file_symtab) |
50641945 FN |
239 | { |
240 | int i1 = 0; | |
241 | int ibase; | |
50641945 | 242 | char *class_name = type_name_no_tag (t); |
c00f8484 KS |
243 | struct cleanup *cleanup; |
244 | char *canon; | |
245 | ||
246 | /* NAME is typed by the user: it needs to be canonicalized before | |
247 | passing to lookup_symbol. */ | |
3a93a0c2 | 248 | canon = cp_canonicalize_string_no_typedefs (name); |
c00f8484 KS |
249 | if (canon != NULL) |
250 | { | |
251 | name = canon; | |
252 | cleanup = make_cleanup (xfree, name); | |
253 | } | |
254 | else | |
255 | cleanup = make_cleanup (null_cleanup, NULL); | |
50641945 FN |
256 | |
257 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
258 | unless we figure out how to get the physname without the name of | |
259 | the class, then the loop can't do any good. */ | |
260 | if (class_name | |
e8eb7bc5 | 261 | && (lookup_symbol_in_language (class_name, get_search_block (file_symtab), |
2570f2b7 | 262 | STRUCT_DOMAIN, language, (int *) NULL))) |
50641945 FN |
263 | { |
264 | int method_counter; | |
5c717440 | 265 | int name_len = strlen (name); |
50641945 | 266 | |
8bd1f2c6 | 267 | CHECK_TYPEDEF (t); |
50641945 FN |
268 | |
269 | /* Loop over each method name. At this level, all overloads of a name | |
270 | are counted as a single name. There is an inner loop which loops over | |
271 | each overload. */ | |
272 | ||
273 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
274 | method_counter >= 0; | |
275 | --method_counter) | |
276 | { | |
50641945 FN |
277 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
278 | char dem_opname[64]; | |
279 | ||
280 | if (strncmp (method_name, "__", 2) == 0 || | |
281 | strncmp (method_name, "op", 2) == 0 || | |
282 | strncmp (method_name, "type", 4) == 0) | |
283 | { | |
284 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
285 | method_name = dem_opname; | |
286 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
287 | method_name = dem_opname; | |
288 | } | |
289 | ||
13b57657 | 290 | if (strcmp_iw (name, method_name) == 0) |
50641945 | 291 | /* Find all the overloaded methods with that name. */ |
53c5240f | 292 | i1 += add_matching_methods (method_counter, t, language, |
aee8d8ba | 293 | sym_arr + i1); |
5c717440 DJ |
294 | else if (strncmp (class_name, name, name_len) == 0 |
295 | && (class_name[name_len] == '\0' | |
296 | || class_name[name_len] == '<')) | |
53c5240f | 297 | i1 += add_constructors (method_counter, t, language, |
aee8d8ba | 298 | sym_arr + i1); |
50641945 FN |
299 | } |
300 | } | |
301 | ||
302 | /* Only search baseclasses if there is no match yet, since names in | |
303 | derived classes override those in baseclasses. | |
304 | ||
305 | FIXME: The above is not true; it is only true of member functions | |
306 | if they have the same number of arguments (??? - section 13.1 of the | |
307 | ARM says the function members are not in the same scope but doesn't | |
308 | really spell out the rules in a way I understand. In any case, if | |
309 | the number of arguments differ this is a case in which we can overload | |
310 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
311 | rather than hiding in this case). */ | |
312 | ||
313 | if (i1 == 0) | |
314 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
53c5240f | 315 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, |
e8eb7bc5 | 316 | language, sym_arr + i1, file_symtab); |
50641945 | 317 | |
c00f8484 | 318 | do_cleanups (cleanup); |
50641945 FN |
319 | return i1; |
320 | } | |
321 | ||
aee8d8ba DC |
322 | /* Add the symbols associated to methods of the class whose type is T |
323 | and whose name matches the method indexed by METHOD_COUNTER in the | |
324 | array SYM_ARR. Return the number of methods added. */ | |
325 | ||
326 | static int | |
327 | add_matching_methods (int method_counter, struct type *t, | |
53c5240f | 328 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
329 | { |
330 | int field_counter; | |
331 | int i1 = 0; | |
332 | ||
333 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
334 | field_counter >= 0; | |
335 | --field_counter) | |
336 | { | |
337 | struct fn_field *f; | |
1d06ead6 | 338 | const char *phys_name; |
aee8d8ba DC |
339 | |
340 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
341 | ||
342 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
343 | { | |
1d06ead6 | 344 | char *tmp_name, *tmp2; |
aee8d8ba DC |
345 | |
346 | tmp_name = gdb_mangle_name (t, | |
347 | method_counter, | |
348 | field_counter); | |
1d06ead6 TT |
349 | tmp2 = alloca (strlen (tmp_name) + 1); |
350 | strcpy (tmp2, tmp_name); | |
aee8d8ba | 351 | xfree (tmp_name); |
1d06ead6 | 352 | phys_name = tmp2; |
aee8d8ba DC |
353 | } |
354 | else | |
355 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
53c5240f | 356 | |
53c5240f | 357 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 358 | NULL, VAR_DOMAIN, |
53c5240f | 359 | language, |
2570f2b7 | 360 | (int *) NULL); |
aee8d8ba DC |
361 | if (sym_arr[i1]) |
362 | i1++; | |
363 | else | |
364 | { | |
365 | /* This error message gets printed, but the method | |
1777feb0 | 366 | still seems to be found. |
aee8d8ba DC |
367 | fputs_filtered("(Cannot find method ", gdb_stdout); |
368 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
1777feb0 MS |
369 | language_cplus, |
370 | DMGL_PARAMS | DMGL_ANSI); | |
aee8d8ba DC |
371 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
372 | */ | |
373 | } | |
374 | } | |
375 | ||
376 | return i1; | |
377 | } | |
378 | ||
379 | /* Add the symbols associated to constructors of the class whose type | |
380 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the | |
381 | array SYM_ARR. Return the number of methods added. */ | |
382 | ||
383 | static int | |
384 | add_constructors (int method_counter, struct type *t, | |
53c5240f | 385 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
386 | { |
387 | int field_counter; | |
388 | int i1 = 0; | |
389 | ||
390 | /* For GCC 3.x and stabs, constructors and destructors | |
391 | have names like __base_ctor and __complete_dtor. | |
392 | Check the physname for now if we're looking for a | |
393 | constructor. */ | |
394 | for (field_counter | |
395 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
396 | field_counter >= 0; | |
397 | --field_counter) | |
398 | { | |
399 | struct fn_field *f; | |
1d06ead6 | 400 | const char *phys_name; |
53c5240f | 401 | |
aee8d8ba DC |
402 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
403 | ||
404 | /* GCC 3.x will never produce stabs stub methods, so | |
405 | we don't need to handle this case. */ | |
406 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
407 | continue; | |
408 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
409 | if (! is_constructor_name (phys_name)) | |
410 | continue; | |
411 | ||
412 | /* If this method is actually defined, include it in the | |
413 | list. */ | |
53c5240f | 414 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 415 | NULL, VAR_DOMAIN, |
53c5240f | 416 | language, |
2570f2b7 | 417 | (int *) NULL); |
aee8d8ba DC |
418 | if (sym_arr[i1]) |
419 | i1++; | |
420 | } | |
421 | ||
422 | return i1; | |
423 | } | |
424 | ||
50641945 FN |
425 | /* Helper function for decode_line_1. |
426 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
427 | the SAL has a symtab. | |
428 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
429 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
430 | line spec is `filename:linenum'. */ | |
431 | ||
432 | static void | |
433 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
7efd8fc2 | 434 | struct linespec_result *canonical) |
50641945 FN |
435 | { |
436 | char **canonical_arr; | |
437 | char *canonical_name; | |
438 | char *filename; | |
439 | struct symtab *s = sal->symtab; | |
440 | ||
441 | if (s == (struct symtab *) NULL | |
442 | || s->filename == (char *) NULL | |
7efd8fc2 | 443 | || canonical == NULL) |
50641945 FN |
444 | return; |
445 | ||
446 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
7efd8fc2 | 447 | canonical->canonical = canonical_arr; |
50641945 FN |
448 | |
449 | filename = s->filename; | |
450 | if (symname != NULL) | |
451 | { | |
452 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
453 | sprintf (canonical_name, "%s:%s", filename, symname); | |
454 | } | |
455 | else | |
456 | { | |
457 | canonical_name = xmalloc (strlen (filename) + 30); | |
458 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
459 | } | |
460 | canonical_arr[0] = canonical_name; | |
461 | } | |
462 | ||
463 | ||
464 | ||
465 | /* Find an instance of the character C in the string S that is outside | |
466 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
467 | strings. Also, ignore the char within a template name, like a ',' |
468 | within foo<int, int>. */ | |
469 | ||
50641945 FN |
470 | static char * |
471 | find_toplevel_char (char *s, char c) | |
472 | { | |
473 | int quoted = 0; /* zero if we're not in quotes; | |
474 | '"' if we're in a double-quoted string; | |
475 | '\'' if we're in a single-quoted string. */ | |
a04257e6 | 476 | int depth = 0; /* Number of unclosed parens we've seen. */ |
50641945 FN |
477 | char *scan; |
478 | ||
479 | for (scan = s; *scan; scan++) | |
480 | { | |
481 | if (quoted) | |
482 | { | |
483 | if (*scan == quoted) | |
484 | quoted = 0; | |
485 | else if (*scan == '\\' && *(scan + 1)) | |
486 | scan++; | |
487 | } | |
488 | else if (*scan == c && ! quoted && depth == 0) | |
489 | return scan; | |
490 | else if (*scan == '"' || *scan == '\'') | |
491 | quoted = *scan; | |
8120c9d5 | 492 | else if (*scan == '(' || *scan == '<') |
50641945 | 493 | depth++; |
8120c9d5 | 494 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
495 | depth--; |
496 | } | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
889f28e2 | 501 | /* Determines if the gives string corresponds to an Objective-C method |
1777feb0 | 502 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols |
889f28e2 AF |
503 | are allowed to have spaces and parentheses in them. */ |
504 | ||
505 | static int | |
506 | is_objc_method_format (const char *s) | |
507 | { | |
508 | if (s == NULL || *s == '\0') | |
509 | return 0; | |
510 | /* Handle arguments with the format FILENAME:SYMBOL. */ | |
511 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL) | |
512 | && (s[2] == '[') && strchr(s, ']')) | |
513 | return 1; | |
514 | /* Handle arguments that are just SYMBOL. */ | |
515 | else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']')) | |
516 | return 1; | |
517 | return 0; | |
518 | } | |
519 | ||
50641945 FN |
520 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
521 | operate on (ask user if necessary). | |
522 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
523 | as canonical line specs there. */ | |
524 | ||
525 | static struct symtabs_and_lines | |
526 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
7efd8fc2 | 527 | struct linespec_result *canonical) |
50641945 FN |
528 | { |
529 | struct symtabs_and_lines values, return_values; | |
530 | char *args, *arg1; | |
531 | int i; | |
532 | char *prompt; | |
533 | char *symname; | |
534 | struct cleanup *old_chain; | |
535 | char **canonical_arr = (char **) NULL; | |
717d2f5a | 536 | const char *select_mode = multiple_symbols_select_mode (); |
50641945 | 537 | |
717d2f5a | 538 | if (select_mode == multiple_symbols_cancel) |
3e43a32a MS |
539 | error (_("canceled because the command is ambiguous\n" |
540 | "See set/show multiple-symbol.")); | |
717d2f5a | 541 | |
50641945 FN |
542 | values.sals = (struct symtab_and_line *) |
543 | alloca (nelts * sizeof (struct symtab_and_line)); | |
544 | return_values.sals = (struct symtab_and_line *) | |
545 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 546 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
547 | |
548 | if (canonical) | |
549 | { | |
550 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 551 | make_cleanup (xfree, canonical_arr); |
50641945 | 552 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
7efd8fc2 | 553 | canonical->canonical = canonical_arr; |
50641945 FN |
554 | } |
555 | ||
556 | i = 0; | |
50641945 FN |
557 | while (i < nelts) |
558 | { | |
a04257e6 | 559 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
fe39c653 | 560 | init_sal (&values.sals[i]); |
50641945 | 561 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
717d2f5a | 562 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
50641945 FN |
563 | i++; |
564 | } | |
565 | ||
717d2f5a JB |
566 | /* If select_mode is "all", then do not print the multiple-choice |
567 | menu and act as if the user had chosen choice "1" (all). */ | |
dc67126b NR |
568 | if (select_mode == multiple_symbols_all |
569 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) | |
717d2f5a JB |
570 | args = "1"; |
571 | else | |
50641945 | 572 | { |
717d2f5a JB |
573 | i = 0; |
574 | printf_unfiltered (_("[0] cancel\n[1] all\n")); | |
575 | while (i < nelts) | |
576 | { | |
577 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) | |
578 | { | |
579 | if (values.sals[i].symtab) | |
580 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
581 | (i + 2), | |
582 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
583 | values.sals[i].symtab->filename, | |
584 | values.sals[i].line); | |
585 | else | |
3e43a32a MS |
586 | printf_unfiltered (_("[%d] %s at ?FILE:%d [No symtab? " |
587 | "Probably broken debug info...]\n"), | |
717d2f5a JB |
588 | (i + 2), |
589 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
590 | values.sals[i].line); | |
591 | ||
592 | } | |
593 | else | |
594 | printf_unfiltered (_("?HERE\n")); | |
595 | i++; | |
596 | } | |
597 | ||
598 | prompt = getenv ("PS2"); | |
599 | if (prompt == NULL) | |
600 | { | |
601 | prompt = "> "; | |
602 | } | |
603 | args = command_line_input (prompt, 0, "overload-choice"); | |
50641945 | 604 | } |
50641945 FN |
605 | |
606 | if (args == 0 || *args == 0) | |
e2e0b3e5 | 607 | error_no_arg (_("one or more choice numbers")); |
50641945 FN |
608 | |
609 | i = 0; | |
610 | while (*args) | |
611 | { | |
612 | int num; | |
613 | ||
614 | arg1 = args; | |
615 | while (*arg1 >= '0' && *arg1 <= '9') | |
616 | arg1++; | |
617 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
8a3fe4f8 | 618 | error (_("Arguments must be choice numbers.")); |
50641945 FN |
619 | |
620 | num = atoi (args); | |
621 | ||
622 | if (num == 0) | |
8a3fe4f8 | 623 | error (_("canceled")); |
50641945 FN |
624 | else if (num == 1) |
625 | { | |
626 | if (canonical_arr) | |
627 | { | |
628 | for (i = 0; i < nelts; i++) | |
629 | { | |
630 | if (canonical_arr[i] == NULL) | |
631 | { | |
3567439c | 632 | symname = SYMBOL_LINKAGE_NAME (sym_arr[i]); |
1b36a34b | 633 | canonical_arr[i] = xstrdup (symname); |
50641945 FN |
634 | } |
635 | } | |
636 | } | |
637 | memcpy (return_values.sals, values.sals, | |
638 | (nelts * sizeof (struct symtab_and_line))); | |
639 | return_values.nelts = nelts; | |
640 | discard_cleanups (old_chain); | |
641 | return return_values; | |
642 | } | |
643 | ||
644 | if (num >= nelts + 2) | |
645 | { | |
a3f17187 | 646 | printf_unfiltered (_("No choice number %d.\n"), num); |
50641945 FN |
647 | } |
648 | else | |
649 | { | |
650 | num -= 2; | |
651 | if (values.sals[num].pc) | |
652 | { | |
653 | if (canonical_arr) | |
654 | { | |
3567439c | 655 | symname = SYMBOL_LINKAGE_NAME (sym_arr[num]); |
b8c9b27d | 656 | make_cleanup (xfree, symname); |
1b36a34b | 657 | canonical_arr[i] = xstrdup (symname); |
50641945 FN |
658 | } |
659 | return_values.sals[i++] = values.sals[num]; | |
660 | values.sals[num].pc = 0; | |
661 | } | |
662 | else | |
663 | { | |
3e43a32a MS |
664 | printf_unfiltered (_("duplicate request for %d ignored.\n"), |
665 | num); | |
50641945 FN |
666 | } |
667 | } | |
668 | ||
669 | args = arg1; | |
670 | while (*args == ' ' || *args == '\t') | |
671 | args++; | |
672 | } | |
673 | return_values.nelts = i; | |
674 | discard_cleanups (old_chain); | |
675 | return return_values; | |
676 | } | |
94af9270 | 677 | |
3d50dd94 JK |
678 | /* Valid delimiters for linespec keywords "if", "thread" or "task". */ |
679 | ||
680 | static int | |
681 | is_linespec_boundary (char c) | |
682 | { | |
683 | return c == ' ' || c == '\t' || c == '\0' || c == ','; | |
684 | } | |
685 | ||
94af9270 KS |
686 | /* A helper function for decode_line_1 and friends which skips P |
687 | past any method overload information at the beginning of P, e.g., | |
688 | "(const struct foo *)". | |
689 | ||
690 | This function assumes that P has already been validated to contain | |
691 | overload information, and it will assert if *P != '('. */ | |
692 | static char * | |
693 | find_method_overload_end (char *p) | |
694 | { | |
695 | int depth = 0; | |
696 | ||
697 | gdb_assert (*p == '('); | |
698 | ||
699 | while (*p) | |
700 | { | |
701 | if (*p == '(') | |
702 | ++depth; | |
703 | else if (*p == ')') | |
704 | { | |
705 | if (--depth == 0) | |
706 | { | |
707 | ++p; | |
708 | break; | |
709 | } | |
710 | } | |
711 | ++p; | |
712 | } | |
713 | ||
714 | return p; | |
715 | } | |
c00f8484 | 716 | |
c00f8484 | 717 | /* Keep important information used when looking up a name. This includes |
3d50dd94 JK |
718 | template parameters, overload information, and important keywords, including |
719 | the possible Java trailing type. */ | |
c00f8484 KS |
720 | |
721 | static char * | |
3d50dd94 | 722 | keep_name_info (char *p, int on_boundary) |
c00f8484 | 723 | { |
3d50dd94 JK |
724 | const char *quotes = get_gdb_completer_quote_characters (); |
725 | char *saved_p = p; | |
726 | int nest = 0; | |
c00f8484 | 727 | |
3d50dd94 JK |
728 | while (*p) |
729 | { | |
730 | if (strchr (quotes, *p)) | |
731 | break; | |
c00f8484 | 732 | |
3d50dd94 JK |
733 | if (*p == ',' && !nest) |
734 | break; | |
c00f8484 | 735 | |
3d50dd94 JK |
736 | if (on_boundary && !nest) |
737 | { | |
738 | const char *const words[] = { "if", "thread", "task" }; | |
739 | int wordi; | |
c00f8484 | 740 | |
3d50dd94 JK |
741 | for (wordi = 0; wordi < ARRAY_SIZE (words); wordi++) |
742 | if (strncmp (p, words[wordi], strlen (words[wordi])) == 0 | |
743 | && is_linespec_boundary (p[strlen (words[wordi])])) | |
744 | break; | |
745 | if (wordi < ARRAY_SIZE (words)) | |
746 | break; | |
747 | } | |
c00f8484 | 748 | |
3d50dd94 JK |
749 | if (*p == '(' || *p == '<' || *p == '[') |
750 | nest++; | |
751 | else if ((*p == ')' || *p == '>' || *p == ']') && nest > 0) | |
752 | nest--; | |
c00f8484 | 753 | |
3d50dd94 JK |
754 | p++; |
755 | ||
756 | /* The ',' check could fail on "operator ,". */ | |
757 | p += cp_validate_operator (p); | |
758 | ||
759 | on_boundary = is_linespec_boundary (p[-1]); | |
f17170e5 | 760 | } |
c00f8484 | 761 | |
3d50dd94 JK |
762 | while (p > saved_p && is_linespec_boundary (p[-1])) |
763 | p--; | |
764 | ||
765 | return p; | |
c00f8484 KS |
766 | } |
767 | ||
50641945 | 768 | \f |
1777feb0 | 769 | /* The parser of linespec itself. */ |
50641945 FN |
770 | |
771 | /* Parse a string that specifies a line number. | |
772 | Pass the address of a char * variable; that variable will be | |
773 | advanced over the characters actually parsed. | |
774 | ||
775 | The string can be: | |
776 | ||
777 | LINENUM -- that line number in current file. PC returned is 0. | |
778 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
779 | FUNCTION -- line number of openbrace of that function. | |
780 | PC returned is the start of the function. | |
0f5238ed | 781 | LABEL -- a label in the current scope |
50641945 FN |
782 | VARIABLE -- line number of definition of that variable. |
783 | PC returned is 0. | |
784 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
785 | *EXPR -- line in which address EXPR appears. | |
786 | ||
787 | This may all be followed by an "if EXPR", which we ignore. | |
788 | ||
789 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
790 | ||
791 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
792 | of real code inside a function when a function is specified, and it is | |
793 | not OK to specify a variable or type to get its line number. | |
794 | ||
795 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
796 | It defaults to current_source_symtab. | |
797 | DEFAULT_LINE specifies the line number to use for relative | |
798 | line numbers (that start with signs). Defaults to current_source_line. | |
799 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
1777feb0 | 800 | line specs there if necessary. Currently overloaded member functions and |
50641945 | 801 | line numbers or static functions without a filename yield a canonical |
1777feb0 | 802 | line spec. The array and the line spec strings are allocated on the heap, |
50641945 FN |
803 | it is the callers responsibility to free them. |
804 | ||
805 | Note that it is possible to return zero for the symtab | |
806 | if no file is validly specified. Callers must check that. | |
58438ac1 | 807 | Also, the line number returned may be invalid. */ |
50641945 FN |
808 | |
809 | /* We allow single quotes in various places. This is a hideous | |
810 | kludge, which exists because the completer can't yet deal with the | |
811 | lack of single quotes. FIXME: write a linespec_completer which we | |
812 | can use as appropriate instead of make_symbol_completion_list. */ | |
813 | ||
814 | struct symtabs_and_lines | |
815 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
58438ac1 | 816 | int default_line, struct linespec_result *canonical) |
50641945 | 817 | { |
f3c39e76 | 818 | char *p; |
614b3b14 | 819 | char *q; |
88d262ca DC |
820 | /* If a file name is specified, this is its symtab. */ |
821 | struct symtab *file_symtab = NULL; | |
50641945 | 822 | |
50641945 | 823 | char *copy; |
636b1a6d DC |
824 | /* This says whether or not something in *ARGPTR is quoted with |
825 | completer_quotes (i.e. with single quotes). */ | |
e325fb69 | 826 | int is_quoted; |
e5dd4106 | 827 | /* Is *ARGPTR enclosed in double quotes? */ |
50641945 | 828 | int is_quote_enclosed; |
d2630e69 | 829 | int is_objc_method = 0; |
50641945 | 830 | char *saved_arg = *argptr; |
791dfb64 DJ |
831 | /* If IS_QUOTED, the end of the quoted bit. */ |
832 | char *end_quote = NULL; | |
e8eb7bc5 KS |
833 | /* Is *ARGPTR enclosed in single quotes? */ |
834 | int is_squote_enclosed = 0; | |
0e0b460e KS |
835 | /* The "first half" of the linespec. */ |
836 | char *first_half; | |
50641945 | 837 | |
9ef07c8c TT |
838 | /* If we are parsing `function:label', this holds the symbol for the |
839 | function. */ | |
840 | struct symbol *function_symbol = NULL; | |
841 | /* If FUNCTION_SYMBOL is not NULL, then this is the exception that | |
842 | was thrown when trying to parse a filename. */ | |
843 | volatile struct gdb_exception file_exception; | |
844 | ||
50641945 FN |
845 | /* Defaults have defaults. */ |
846 | ||
44fe14ab DC |
847 | initialize_defaults (&default_symtab, &default_line); |
848 | ||
a04257e6 | 849 | /* See if arg is *PC. */ |
50641945 | 850 | |
e325fb69 MS |
851 | if (**argptr == '*') |
852 | return decode_indirect (argptr); | |
5f01dbc0 | 853 | |
e325fb69 MS |
854 | is_quoted = (strchr (get_gdb_completer_quote_characters (), |
855 | **argptr) != NULL); | |
50641945 | 856 | |
791dfb64 | 857 | if (is_quoted) |
e8eb7bc5 KS |
858 | { |
859 | end_quote = skip_quoted (*argptr); | |
860 | if (*end_quote == '\0') | |
861 | is_squote_enclosed = 1; | |
862 | } | |
50641945 | 863 | |
0960f083 DC |
864 | /* Check to see if it's a multipart linespec (with colons or |
865 | periods). */ | |
50641945 | 866 | |
17763fd9 EZ |
867 | /* Locate the end of the first half of the linespec. |
868 | After the call, for instance, if the argptr string is "foo.c:123" | |
869 | p will point at "123". If there is only one part, like "foo", p | |
1777feb0 MS |
870 | will point to "". If this is a C++ name, like "A::B::foo", p will |
871 | point to "::B::foo". Argptr is not changed by this call. */ | |
50641945 | 872 | |
0e0b460e | 873 | first_half = p = locate_first_half (argptr, &is_quote_enclosed); |
50641945 | 874 | |
e8eb7bc5 KS |
875 | /* First things first: if ARGPTR starts with a filename, get its |
876 | symtab and strip the filename from ARGPTR. */ | |
877 | TRY_CATCH (file_exception, RETURN_MASK_ERROR) | |
878 | { | |
879 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed); | |
880 | } | |
881 | ||
882 | if (file_exception.reason >= 0) | |
883 | { | |
884 | /* Check for single quotes on the non-filename part. */ | |
885 | is_quoted = (**argptr | |
886 | && strchr (get_gdb_completer_quote_characters (), | |
887 | **argptr) != NULL); | |
888 | if (is_quoted) | |
889 | end_quote = skip_quoted (*argptr); | |
890 | ||
891 | /* Locate the next "half" of the linespec. */ | |
892 | first_half = p = locate_first_half (argptr, &is_quote_enclosed); | |
893 | } | |
894 | ||
d2630e69 AF |
895 | /* Check if this is an Objective-C method (anything that starts with |
896 | a '+' or '-' and a '['). */ | |
889f28e2 | 897 | if (is_objc_method_format (p)) |
94af9270 | 898 | is_objc_method = 1; |
d2630e69 AF |
899 | |
900 | /* Check if the symbol could be an Objective-C selector. */ | |
901 | ||
902 | { | |
903 | struct symtabs_and_lines values; | |
e0881a8e | 904 | |
e8eb7bc5 | 905 | values = decode_objc (argptr, funfirstline, file_symtab, |
d2630e69 AF |
906 | canonical, saved_arg); |
907 | if (values.sals != NULL) | |
908 | return values; | |
909 | } | |
910 | ||
0960f083 | 911 | /* Does it look like there actually were two parts? */ |
50641945 | 912 | |
791dfb64 | 913 | if (p[0] == ':' || p[0] == '.') |
50641945 | 914 | { |
17763fd9 EZ |
915 | /* Is it a C++ or Java compound data structure? |
916 | The check on p[1] == ':' is capturing the case of "::", | |
1777feb0 | 917 | since p[0]==':' was checked above. |
17763fd9 EZ |
918 | Note that the call to decode_compound does everything |
919 | for us, including the lookup on the symbol table, so we | |
1777feb0 | 920 | can return now. */ |
17763fd9 | 921 | |
50641945 | 922 | if (p[0] == '.' || p[1] == ':') |
791dfb64 | 923 | { |
94af9270 | 924 | struct symtabs_and_lines values; |
dcf9f4ab JK |
925 | volatile struct gdb_exception ex; |
926 | char *saved_argptr = *argptr; | |
94af9270 KS |
927 | |
928 | if (is_quote_enclosed) | |
929 | ++saved_arg; | |
dcf9f4ab | 930 | |
2f741504 JK |
931 | /* Initialize it just to avoid a GCC false warning. */ |
932 | memset (&values, 0, sizeof (values)); | |
933 | ||
dcf9f4ab JK |
934 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
935 | { | |
936 | values = decode_compound (argptr, funfirstline, canonical, | |
937 | file_symtab, saved_arg, p); | |
938 | } | |
e8eb7bc5 | 939 | if ((is_quoted || is_squote_enclosed) && **argptr == '\'') |
94af9270 | 940 | *argptr = *argptr + 1; |
50641945 | 941 | |
dcf9f4ab JK |
942 | if (ex.reason >= 0) |
943 | return values; | |
50641945 | 944 | |
dcf9f4ab JK |
945 | if (ex.error != NOT_FOUND_ERROR) |
946 | throw_exception (ex); | |
947 | ||
948 | *argptr = saved_argptr; | |
949 | } | |
950 | else | |
50641945 | 951 | { |
dcf9f4ab JK |
952 | /* If there was an exception looking up a specified filename earlier, |
953 | then check whether we were really given `function:label'. */ | |
954 | if (file_exception.reason < 0) | |
955 | { | |
956 | function_symbol = find_function_symbol (argptr, p, | |
957 | is_quote_enclosed); | |
958 | /* If we did not find a function, re-throw the original | |
959 | exception. */ | |
960 | if (!function_symbol) | |
961 | throw_exception (file_exception); | |
962 | } | |
963 | ||
964 | /* Check for single quotes on the non-filename part. */ | |
965 | if (!is_quoted) | |
966 | { | |
967 | is_quoted = (**argptr | |
968 | && strchr (get_gdb_completer_quote_characters (), | |
969 | **argptr) != NULL); | |
970 | if (is_quoted) | |
971 | end_quote = skip_quoted (*argptr); | |
972 | } | |
50641945 | 973 | } |
50641945 | 974 | } |
50641945 | 975 | |
bc882aa9 | 976 | /* file_symtab is specified file's symtab, or 0 if no file specified. |
9ef07c8c TT |
977 | If we are parsing `function:symbol', then FUNCTION_SYMBOL is the |
978 | function before the `:'. | |
50641945 FN |
979 | arg no longer contains the file name. */ |
980 | ||
0e0b460e KS |
981 | /* If the filename was quoted, we must re-check the quotation. */ |
982 | ||
983 | if (end_quote == first_half && *end_quote!= '\0') | |
984 | { | |
985 | is_quoted = (**argptr | |
986 | && strchr (get_gdb_completer_quote_characters (), | |
987 | **argptr) != NULL); | |
988 | if (is_quoted) | |
989 | end_quote = skip_quoted (*argptr); | |
990 | } | |
991 | ||
a04257e6 | 992 | /* Check whether arg is all digits (and sign). */ |
50641945 FN |
993 | |
994 | q = *argptr; | |
995 | if (*q == '-' || *q == '+') | |
996 | q++; | |
997 | while (*q >= '0' && *q <= '9') | |
998 | q++; | |
999 | ||
9ef07c8c TT |
1000 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',') |
1001 | && function_symbol == NULL) | |
84fba31b DC |
1002 | /* We found a token consisting of all digits -- at least one digit. */ |
1003 | return decode_all_digits (argptr, default_symtab, default_line, | |
88d262ca | 1004 | canonical, file_symtab, q); |
50641945 FN |
1005 | |
1006 | /* Arg token is not digits => try it as a variable name | |
1007 | Find the next token (everything up to end or next whitespace). */ | |
1008 | ||
a04257e6 DC |
1009 | if (**argptr == '$') /* May be a convenience variable. */ |
1010 | /* One or two $ chars possible. */ | |
1011 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); | |
e8eb7bc5 | 1012 | else if (is_quoted || is_squote_enclosed) |
50641945 | 1013 | { |
791dfb64 | 1014 | p = end_quote; |
50641945 | 1015 | if (p[-1] != '\'') |
8a3fe4f8 | 1016 | error (_("Unmatched single quote.")); |
50641945 | 1017 | } |
d2630e69 AF |
1018 | else if (is_objc_method) |
1019 | { | |
1777feb0 | 1020 | /* allow word separators in method names for Obj-C. */ |
d2630e69 AF |
1021 | p = skip_quoted_chars (*argptr, NULL, ""); |
1022 | } | |
50641945 FN |
1023 | else |
1024 | { | |
1025 | p = skip_quoted (*argptr); | |
1026 | } | |
1027 | ||
c00f8484 | 1028 | /* Keep any important naming information. */ |
3d50dd94 | 1029 | p = keep_name_info (p, p == saved_arg || is_linespec_boundary (p[-1])); |
94af9270 | 1030 | |
50641945 FN |
1031 | copy = (char *) alloca (p - *argptr + 1); |
1032 | memcpy (copy, *argptr, p - *argptr); | |
1033 | copy[p - *argptr] = '\0'; | |
1034 | if (p != *argptr | |
1035 | && copy[0] | |
1036 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 1037 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
1038 | { |
1039 | copy[p - *argptr - 1] = '\0'; | |
1040 | copy++; | |
1041 | } | |
e8eb7bc5 | 1042 | else if (is_quoted || is_squote_enclosed) |
791dfb64 | 1043 | copy[p - *argptr - 1] = '\0'; |
50641945 FN |
1044 | while (*p == ' ' || *p == '\t') |
1045 | p++; | |
1046 | *argptr = p; | |
1047 | ||
1048 | /* If it starts with $: may be a legitimate variable or routine name | |
1049 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
a04257e6 | 1050 | be history value, or it may be a convenience variable. */ |
50641945 | 1051 | |
9ef07c8c | 1052 | if (*copy == '$' && function_symbol == NULL) |
14e91ac5 | 1053 | return decode_dollar (copy, funfirstline, default_symtab, |
88d262ca | 1054 | canonical, file_symtab); |
50641945 | 1055 | |
0f5238ed TT |
1056 | /* Try the token as a label, but only if no file was specified, |
1057 | because we can only really find labels in the current scope. */ | |
1058 | ||
1059 | if (!file_symtab) | |
1060 | { | |
1061 | struct symtabs_and_lines label_result; | |
9ef07c8c | 1062 | if (decode_label (function_symbol, copy, canonical, &label_result)) |
0f5238ed TT |
1063 | return label_result; |
1064 | } | |
1065 | ||
9ef07c8c | 1066 | if (function_symbol) |
58438ac1 | 1067 | throw_exception (file_exception); |
9ef07c8c | 1068 | |
50641945 FN |
1069 | /* Look up that token as a variable. |
1070 | If file specified, use that file's per-file block to start with. */ | |
1071 | ||
58438ac1 | 1072 | return decode_variable (copy, funfirstline, canonical, file_symtab); |
413dad4d | 1073 | } |
50641945 | 1074 | |
44fe14ab DC |
1075 | \f |
1076 | ||
614b3b14 DC |
1077 | /* Now, more helper functions for decode_line_1. Some conventions |
1078 | that these functions follow: | |
1079 | ||
1080 | Decode_line_1 typically passes along some of its arguments or local | |
1081 | variables to the subfunctions. It passes the variables by | |
1082 | reference if they are modified by the subfunction, and by value | |
1083 | otherwise. | |
1084 | ||
1085 | Some of the functions have side effects that don't arise from | |
1086 | variables that are passed by reference. In particular, if a | |
1087 | function is passed ARGPTR as an argument, it modifies what ARGPTR | |
1088 | points to; typically, it advances *ARGPTR past whatever substring | |
1089 | it has just looked at. (If it doesn't modify *ARGPTR, then the | |
94af9270 KS |
1090 | function gets passed *ARGPTR instead, which is then called ARG.) |
1091 | Also, functions that return a struct symtabs_and_lines may modify | |
1092 | CANONICAL, as in the description of decode_line_1. | |
614b3b14 DC |
1093 | |
1094 | If a function returns a struct symtabs_and_lines, then that struct | |
1095 | will immediately make its way up the call chain to be returned by | |
1096 | decode_line_1. In particular, all of the functions decode_XXX | |
1097 | calculate the appropriate struct symtabs_and_lines, under the | |
1098 | assumption that their argument is of the form XXX. */ | |
44fe14ab DC |
1099 | |
1100 | /* First, some functions to initialize stuff at the beggining of the | |
1101 | function. */ | |
1102 | ||
1103 | static void | |
1104 | initialize_defaults (struct symtab **default_symtab, int *default_line) | |
1105 | { | |
1106 | if (*default_symtab == 0) | |
1107 | { | |
1108 | /* Use whatever we have for the default source line. We don't use | |
1109 | get_current_or_default_symtab_and_line as it can recurse and call | |
1777feb0 | 1110 | us back! */ |
44fe14ab DC |
1111 | struct symtab_and_line cursal = |
1112 | get_current_source_symtab_and_line (); | |
1113 | ||
1114 | *default_symtab = cursal.symtab; | |
1115 | *default_line = cursal.line; | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | \f | |
1120 | ||
1121 | /* Decode arg of the form *PC. */ | |
1122 | ||
1123 | static struct symtabs_and_lines | |
1124 | decode_indirect (char **argptr) | |
1125 | { | |
1126 | struct symtabs_and_lines values; | |
1127 | CORE_ADDR pc; | |
1128 | ||
1129 | (*argptr)++; | |
63ffa6ee | 1130 | pc = value_as_address (parse_to_comma_and_eval (argptr)); |
44fe14ab DC |
1131 | |
1132 | values.sals = (struct symtab_and_line *) | |
1133 | xmalloc (sizeof (struct symtab_and_line)); | |
1134 | ||
1135 | values.nelts = 1; | |
1136 | values.sals[0] = find_pc_line (pc, 0); | |
1137 | values.sals[0].pc = pc; | |
1138 | values.sals[0].section = find_pc_overlay (pc); | |
ed0616c6 | 1139 | values.sals[0].explicit_pc = 1; |
44fe14ab DC |
1140 | |
1141 | return values; | |
1142 | } | |
413dad4d DC |
1143 | |
1144 | \f | |
1145 | ||
0960f083 DC |
1146 | /* Locate the first half of the linespec, ending in a colon, period, |
1147 | or whitespace. (More or less.) Also, check to see if *ARGPTR is | |
1148 | enclosed in double quotes; if so, set is_quote_enclosed, advance | |
17763fd9 EZ |
1149 | ARGPTR past that and zero out the trailing double quote. |
1150 | If ARGPTR is just a simple name like "main", p will point to "" | |
1151 | at the end. */ | |
0960f083 DC |
1152 | |
1153 | static char * | |
1154 | locate_first_half (char **argptr, int *is_quote_enclosed) | |
1155 | { | |
1156 | char *ii; | |
1157 | char *p, *p1; | |
1158 | int has_comma; | |
1159 | ||
1160 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
1161 | and we must isolate the first half. Outer layers will call again later | |
1162 | for the second half. | |
1163 | ||
1164 | Don't count commas that appear in argument lists of overloaded | |
1165 | functions, or in quoted strings. It's stupid to go to this much | |
1166 | trouble when the rest of the function is such an obvious roach hotel. */ | |
1167 | ii = find_toplevel_char (*argptr, ','); | |
1168 | has_comma = (ii != 0); | |
1169 | ||
a04257e6 | 1170 | /* Temporarily zap out second half to not confuse the code below. |
1777feb0 | 1171 | This is undone below. Do not change ii!! */ |
0960f083 DC |
1172 | if (has_comma) |
1173 | { | |
1174 | *ii = '\0'; | |
1175 | } | |
1176 | ||
a04257e6 DC |
1177 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
1178 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore | |
1179 | inside of <>. */ | |
0960f083 DC |
1180 | |
1181 | p = *argptr; | |
1182 | if (p[0] == '"') | |
1183 | { | |
1184 | *is_quote_enclosed = 1; | |
1185 | (*argptr)++; | |
1186 | p++; | |
1187 | } | |
1188 | else | |
0e0b460e KS |
1189 | { |
1190 | *is_quote_enclosed = 0; | |
1191 | if (strchr (get_gdb_completer_quote_characters (), *p)) | |
1192 | { | |
1193 | ++(*argptr); | |
1194 | ++p; | |
1195 | } | |
1196 | } | |
0960f083 DC |
1197 | for (; *p; p++) |
1198 | { | |
1199 | if (p[0] == '<') | |
1200 | { | |
1201 | char *temp_end = find_template_name_end (p); | |
e0881a8e | 1202 | |
0960f083 | 1203 | if (!temp_end) |
8a3fe4f8 | 1204 | error (_("malformed template specification in command")); |
0960f083 DC |
1205 | p = temp_end; |
1206 | } | |
c00f8484 KS |
1207 | |
1208 | if (p[0] == '(') | |
1209 | p = find_method_overload_end (p); | |
1210 | ||
d2630e69 | 1211 | /* Check for a colon and a plus or minus and a [ (which |
1777feb0 | 1212 | indicates an Objective-C method). */ |
889f28e2 | 1213 | if (is_objc_method_format (p)) |
d2630e69 AF |
1214 | { |
1215 | break; | |
1216 | } | |
a04257e6 | 1217 | /* Check for the end of the first half of the linespec. End of |
e8eb7bc5 KS |
1218 | line, a tab, a colon or a space. But if enclosed in double |
1219 | quotes we do not break on enclosed spaces. */ | |
0960f083 DC |
1220 | if (!*p |
1221 | || p[0] == '\t' | |
e8eb7bc5 | 1222 | || (p[0] == ':') |
0960f083 DC |
1223 | || ((p[0] == ' ') && !*is_quote_enclosed)) |
1224 | break; | |
a04257e6 | 1225 | if (p[0] == '.' && strchr (p, ':') == NULL) |
0960f083 | 1226 | { |
a04257e6 | 1227 | /* Java qualified method. Find the *last* '.', since the |
94af9270 KS |
1228 | others are package qualifiers. Stop at any open parenthesis |
1229 | which might provide overload information. */ | |
1230 | for (p1 = p; *p1 && *p1 != '('; p1++) | |
0960f083 DC |
1231 | { |
1232 | if (*p1 == '.') | |
1233 | p = p1; | |
1234 | } | |
1235 | break; | |
1236 | } | |
1237 | } | |
1238 | while (p[0] == ' ' || p[0] == '\t') | |
1239 | p++; | |
1240 | ||
a04257e6 | 1241 | /* If the closing double quote was left at the end, remove it. */ |
0960f083 DC |
1242 | if (*is_quote_enclosed) |
1243 | { | |
1244 | char *closing_quote = strchr (p - 1, '"'); | |
e0881a8e | 1245 | |
0960f083 DC |
1246 | if (closing_quote && closing_quote[1] == '\0') |
1247 | *closing_quote = '\0'; | |
1248 | } | |
1249 | ||
a04257e6 DC |
1250 | /* Now that we've safely parsed the first half, put back ',' so |
1251 | outer layers can see it. */ | |
0960f083 DC |
1252 | if (has_comma) |
1253 | *ii = ','; | |
1254 | ||
1255 | return p; | |
1256 | } | |
1257 | ||
1258 | \f | |
1259 | ||
d2630e69 AF |
1260 | /* Here's where we recognise an Objective-C Selector. An Objective C |
1261 | selector may be implemented by more than one class, therefore it | |
1262 | may represent more than one method/function. This gives us a | |
1263 | situation somewhat analogous to C++ overloading. If there's more | |
1264 | than one method that could represent the selector, then use some of | |
1265 | the existing C++ code to let the user choose one. */ | |
1266 | ||
1267 | struct symtabs_and_lines | |
1268 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, | |
7efd8fc2 | 1269 | struct linespec_result *canonical, char *saved_arg) |
d2630e69 AF |
1270 | { |
1271 | struct symtabs_and_lines values; | |
1272 | struct symbol **sym_arr = NULL; | |
1273 | struct symbol *sym = NULL; | |
d2630e69 | 1274 | struct block *block = NULL; |
15550d6b MK |
1275 | unsigned i1 = 0; |
1276 | unsigned i2 = 0; | |
d2630e69 AF |
1277 | |
1278 | values.sals = NULL; | |
1279 | values.nelts = 0; | |
1280 | ||
e8eb7bc5 KS |
1281 | find_imps (file_symtab, get_search_block (file_symtab), *argptr, |
1282 | NULL, &i1, &i2); | |
d2630e69 AF |
1283 | |
1284 | if (i1 > 0) | |
1285 | { | |
1777feb0 MS |
1286 | sym_arr = (struct symbol **) |
1287 | alloca ((i1 + 1) * sizeof (struct symbol *)); | |
46be51c4 | 1288 | sym_arr[i1] = NULL; |
d2630e69 | 1289 | |
5715d26e | 1290 | *argptr = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); |
d2630e69 AF |
1291 | } |
1292 | ||
1293 | /* i1 now represents the TOTAL number of matches found. | |
1294 | i2 represents how many HIGH-LEVEL (struct symbol) matches, | |
1295 | which will come first in the sym_arr array. Any low-level | |
1296 | (minimal_symbol) matches will follow those. */ | |
1297 | ||
1298 | if (i1 == 1) | |
1299 | { | |
1300 | if (i2 > 0) | |
1301 | { | |
1302 | /* Already a struct symbol. */ | |
1303 | sym = sym_arr[0]; | |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])); | |
3e43a32a MS |
1308 | if ((sym != NULL) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0]), |
1309 | SYMBOL_LINKAGE_NAME (sym)) != 0) | |
d2630e69 | 1310 | { |
3e43a32a MS |
1311 | warning (_("debugging symbol \"%s\" does " |
1312 | "not match selector; ignoring"), | |
1313 | SYMBOL_LINKAGE_NAME (sym)); | |
d2630e69 AF |
1314 | sym = NULL; |
1315 | } | |
1316 | } | |
1317 | ||
3e43a32a MS |
1318 | values.sals = (struct symtab_and_line *) |
1319 | xmalloc (sizeof (struct symtab_and_line)); | |
d2630e69 AF |
1320 | values.nelts = 1; |
1321 | ||
1322 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1323 | { | |
1324 | /* Canonicalize this, so it remains resolved for dylib loads. */ | |
1325 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
3e43a32a MS |
1326 | build_canonical_line_spec (values.sals, |
1327 | SYMBOL_NATURAL_NAME (sym), canonical); | |
d2630e69 AF |
1328 | } |
1329 | else | |
1330 | { | |
69368a60 UW |
1331 | /* The only match was a non-debuggable symbol, which might point |
1332 | to a function descriptor; resolve it to the actual code address | |
1333 | instead. */ | |
1334 | struct minimal_symbol *msymbol = (struct minimal_symbol *)sym_arr[0]; | |
1335 | struct objfile *objfile = msymbol_objfile (msymbol); | |
1336 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
1337 | CORE_ADDR pc = SYMBOL_VALUE_ADDRESS (msymbol); | |
1338 | ||
1339 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, pc, | |
1340 | ¤t_target); | |
1341 | ||
1342 | init_sal (&values.sals[0]); | |
1343 | values.sals[0].pc = pc; | |
d2630e69 AF |
1344 | } |
1345 | return values; | |
1346 | } | |
1347 | ||
1348 | if (i1 > 1) | |
1349 | { | |
1777feb0 | 1350 | /* More than one match. The user must choose one or more. */ |
d2630e69 AF |
1351 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); |
1352 | } | |
1353 | ||
1354 | return values; | |
1355 | } | |
1356 | ||
614b3b14 | 1357 | /* This handles C++ and Java compound data structures. P should point |
17763fd9 EZ |
1358 | at the first component separator, i.e. double-colon or period. As |
1359 | an example, on entrance to this function we could have ARGPTR | |
1360 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ | |
614b3b14 DC |
1361 | |
1362 | static struct symtabs_and_lines | |
7efd8fc2 | 1363 | decode_compound (char **argptr, int funfirstline, |
e8eb7bc5 | 1364 | struct linespec_result *canonical, struct symtab *file_symtab, |
58438ac1 | 1365 | char *the_real_saved_arg, char *p) |
614b3b14 DC |
1366 | { |
1367 | struct symtabs_and_lines values; | |
3a93a0c2 | 1368 | char *p2, *name, *canon; |
614b3b14 DC |
1369 | char *saved_arg2 = *argptr; |
1370 | char *temp_end; | |
1371 | struct symbol *sym; | |
614b3b14 DC |
1372 | char *copy; |
1373 | struct symbol *sym_class; | |
614b3b14 | 1374 | struct type *t; |
c00f8484 | 1375 | char *saved_arg; |
3a93a0c2 | 1376 | struct cleanup *cleanup; |
c00f8484 KS |
1377 | |
1378 | /* If the user specified any completer quote characters in the input, | |
1379 | strip them. They are superfluous. */ | |
1380 | saved_arg = alloca (strlen (the_real_saved_arg) + 1); | |
1381 | { | |
1382 | char *dst = saved_arg; | |
1383 | char *src = the_real_saved_arg; | |
1384 | char *quotes = get_gdb_completer_quote_characters (); | |
1385 | while (*src != '\0') | |
1386 | { | |
1387 | if (strchr (quotes, *src) == NULL) | |
1388 | *dst++ = *src; | |
1389 | ++src; | |
1390 | } | |
1391 | *dst = '\0'; | |
1392 | } | |
614b3b14 | 1393 | |
17763fd9 EZ |
1394 | /* First check for "global" namespace specification, of the form |
1395 | "::foo". If found, skip over the colons and jump to normal | |
1396 | symbol processing. I.e. the whole line specification starts with | |
1777feb0 | 1397 | "::" (note the condition that *argptr == p). */ |
614b3b14 DC |
1398 | if (p[0] == ':' |
1399 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
1400 | saved_arg2 += 2; | |
1401 | ||
87b3ede8 DC |
1402 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
1403 | ||
1404 | 1) AAA::inA is the name of a class. In that case, presumably it | |
1405 | has a method called "fun"; we then look up that method using | |
1406 | find_method. | |
1407 | ||
1408 | 2) AAA::inA isn't the name of a class. In that case, either the | |
c00f8484 KS |
1409 | user made a typo, AAA::inA is the name of a namespace, or it is |
1410 | the name of a minimal symbol. | |
1411 | We just look up AAA::inA::fun with lookup_symbol. If that fails, | |
1412 | try lookup_minimal_symbol. | |
87b3ede8 DC |
1413 | |
1414 | Thus, our first task is to find everything before the last set of | |
1415 | double-colons and figure out if it's the name of a class. So we | |
1416 | first loop through all of the double-colons. */ | |
614b3b14 | 1417 | |
a04257e6 | 1418 | p2 = p; /* Save for restart. */ |
17763fd9 | 1419 | |
1777feb0 | 1420 | /* This is very messy. Following the example above we have now the |
17763fd9 EZ |
1421 | following pointers: |
1422 | p -> "::inA::fun" | |
1423 | argptr -> "AAA::inA::fun | |
1424 | saved_arg -> "AAA::inA::fun | |
1425 | saved_arg2 -> "AAA::inA::fun | |
1777feb0 | 1426 | p2 -> "::inA::fun". */ |
17763fd9 EZ |
1427 | |
1428 | /* In the loop below, with these strings, we'll make 2 passes, each | |
1777feb0 | 1429 | is marked in comments. */ |
17763fd9 | 1430 | |
614b3b14 DC |
1431 | while (1) |
1432 | { | |
c00f8484 KS |
1433 | static char *break_characters = " \t("; |
1434 | ||
a04257e6 | 1435 | /* Move pointer up to next possible class/namespace token. */ |
17763fd9 | 1436 | |
a04257e6 | 1437 | p = p2 + 1; /* Restart with old value +1. */ |
17763fd9 EZ |
1438 | |
1439 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", | |
1440 | i.e. if there is a double-colon, p will now point to the | |
1777feb0 | 1441 | second colon. */ |
87b3ede8 | 1442 | /* PASS2: p2->"::fun", p->":fun" */ |
17763fd9 | 1443 | |
a04257e6 | 1444 | /* Move pointer ahead to next double-colon. */ |
c00f8484 KS |
1445 | while (*p |
1446 | && strchr (break_characters, *p) == NULL | |
1447 | && strchr (get_gdb_completer_quote_characters (), *p) == NULL) | |
614b3b14 | 1448 | { |
12907978 KS |
1449 | if (current_language->la_language == language_cplus) |
1450 | p += cp_validate_operator (p); | |
1451 | ||
614b3b14 DC |
1452 | if (p[0] == '<') |
1453 | { | |
1454 | temp_end = find_template_name_end (p); | |
1455 | if (!temp_end) | |
8a3fe4f8 | 1456 | error (_("malformed template specification in command")); |
614b3b14 DC |
1457 | p = temp_end; |
1458 | } | |
17763fd9 EZ |
1459 | /* Note that, since, at the start of this loop, p would be |
1460 | pointing to the second colon in a double-colon, we only | |
1461 | satisfy the condition below if there is another | |
1777feb0 MS |
1462 | double-colon to the right (after). I.e. there is another |
1463 | component that can be a class or a namespace. I.e, if at | |
17763fd9 EZ |
1464 | the beginning of this loop (PASS1), we had |
1465 | p->":inA::fun", we'll trigger this when p has been | |
1466 | advanced to point to "::fun". */ | |
1777feb0 | 1467 | /* PASS2: we will not trigger this. */ |
614b3b14 | 1468 | else if ((p[0] == ':') && (p[1] == ':')) |
a04257e6 | 1469 | break; /* Found double-colon. */ |
614b3b14 | 1470 | else |
c00f8484 KS |
1471 | { |
1472 | /* PASS2: We'll keep getting here, until P points to one of the | |
1473 | break characters, at which point we exit this loop. */ | |
2b1dbab0 KS |
1474 | if (*p) |
1475 | { | |
1476 | if (p[1] == '(' | |
1477 | && strncmp (&p[1], CP_ANONYMOUS_NAMESPACE_STR, | |
1478 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) | |
1479 | p += CP_ANONYMOUS_NAMESPACE_LEN; | |
1480 | else if (strchr (break_characters, *p) == NULL) | |
1481 | ++p; | |
1482 | } | |
c00f8484 | 1483 | } |
614b3b14 DC |
1484 | } |
1485 | ||
1486 | if (*p != ':') | |
17763fd9 EZ |
1487 | break; /* Out of the while (1). This would happen |
1488 | for instance if we have looked up | |
1489 | unsuccessfully all the components of the | |
1777feb0 | 1490 | string, and p->""(PASS2). */ |
17763fd9 | 1491 | |
c00f8484 | 1492 | /* We get here if p points to one of the break characters or "" (i.e., |
1777feb0 | 1493 | string ended). */ |
17763fd9 EZ |
1494 | /* Save restart for next time around. */ |
1495 | p2 = p; | |
1496 | /* Restore argptr as it was on entry to this function. */ | |
1497 | *argptr = saved_arg2; | |
87b3ede8 DC |
1498 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
1499 | p2->"::fun". */ | |
17763fd9 EZ |
1500 | |
1501 | /* All ready for next pass through the loop. */ | |
614b3b14 DC |
1502 | } /* while (1) */ |
1503 | ||
87b3ede8 | 1504 | |
1777feb0 | 1505 | /* Start of lookup in the symbol tables. */ |
87b3ede8 DC |
1506 | |
1507 | /* Lookup in the symbol table the substring between argptr and | |
1777feb0 | 1508 | p. Note, this call changes the value of argptr. */ |
87b3ede8 DC |
1509 | /* Before the call, argptr->"AAA::inA::fun", |
1510 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 | |
1511 | unchanged. */ | |
e8eb7bc5 | 1512 | sym_class = lookup_prefix_sym (argptr, p2, file_symtab); |
87b3ede8 DC |
1513 | |
1514 | /* If sym_class has been found, and if "AAA::inA" is a class, then | |
1515 | we're in case 1 above. So we look up "fun" as a method of that | |
1516 | class. */ | |
1517 | if (sym_class && | |
1518 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
1519 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
1520 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
1521 | { | |
1522 | /* Arg token is not digits => try it as a function name. | |
1523 | Find the next token (everything up to end or next | |
1524 | blank). */ | |
1525 | if (**argptr | |
1526 | && strchr (get_gdb_completer_quote_characters (), | |
1527 | **argptr) != NULL) | |
1528 | { | |
1529 | p = skip_quoted (*argptr); | |
1530 | *argptr = *argptr + 1; | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | /* At this point argptr->"fun". */ | |
94af9270 | 1535 | char *a; |
e0881a8e | 1536 | |
87b3ede8 | 1537 | p = *argptr; |
94af9270 KS |
1538 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':' |
1539 | && *p != '(') | |
87b3ede8 DC |
1540 | p++; |
1541 | /* At this point p->"". String ended. */ | |
12907978 KS |
1542 | /* Nope, C++ operators could have spaces in them |
1543 | ("foo::operator <" or "foo::operator delete []"). | |
1544 | I apologize, this is a bit hacky... */ | |
1545 | if (current_language->la_language == language_cplus | |
1546 | && *p == ' ' && p - 8 - *argptr + 1 > 0) | |
1547 | { | |
1548 | /* The above loop has already swallowed "operator". */ | |
1549 | p += cp_validate_operator (p - 8) - 8; | |
1550 | } | |
94af9270 | 1551 | |
c00f8484 | 1552 | /* Keep any important naming information. */ |
3d50dd94 | 1553 | p = keep_name_info (p, 1); |
87b3ede8 DC |
1554 | } |
1555 | ||
1556 | /* Allocate our own copy of the substring between argptr and | |
1777feb0 | 1557 | p. */ |
87b3ede8 DC |
1558 | copy = (char *) alloca (p - *argptr + 1); |
1559 | memcpy (copy, *argptr, p - *argptr); | |
1560 | copy[p - *argptr] = '\0'; | |
1561 | if (p != *argptr | |
1562 | && copy[p - *argptr - 1] | |
1563 | && strchr (get_gdb_completer_quote_characters (), | |
1564 | copy[p - *argptr - 1]) != NULL) | |
1565 | copy[p - *argptr - 1] = '\0'; | |
1566 | ||
1777feb0 | 1567 | /* At this point copy->"fun", p->"". */ |
87b3ede8 DC |
1568 | |
1569 | /* No line number may be specified. */ | |
1570 | while (*p == ' ' || *p == '\t') | |
1571 | p++; | |
1572 | *argptr = p; | |
1573 | /* At this point arptr->"". */ | |
1574 | ||
1777feb0 | 1575 | /* Look for copy as a method of sym_class. */ |
87b3ede8 DC |
1576 | /* At this point copy->"fun", sym_class is "AAA:inA", |
1577 | saved_arg->"AAA::inA::fun". This concludes the scanning of | |
1578 | the string for possible components matches. If we find it | |
1777feb0 | 1579 | here, we return. If not, and we are at the and of the string, |
87b3ede8 DC |
1580 | we'll lookup the whole string in the symbol tables. */ |
1581 | ||
3d50dd94 JK |
1582 | return find_method (funfirstline, canonical, saved_arg, copy, t, |
1583 | sym_class, file_symtab); | |
1777feb0 | 1584 | } /* End if symbol found. */ |
87b3ede8 DC |
1585 | |
1586 | ||
1587 | /* We couldn't find a class, so we're in case 2 above. We check the | |
1588 | entire name as a symbol instead. */ | |
1589 | ||
3d50dd94 | 1590 | p = keep_name_info (p, 1); |
c00f8484 | 1591 | |
614b3b14 DC |
1592 | copy = (char *) alloca (p - saved_arg2 + 1); |
1593 | memcpy (copy, saved_arg2, p - saved_arg2); | |
a04257e6 DC |
1594 | /* Note: if is_quoted should be true, we snuff out quote here |
1595 | anyway. */ | |
614b3b14 | 1596 | copy[p - saved_arg2] = '\000'; |
a04257e6 | 1597 | /* Set argptr to skip over the name. */ |
614b3b14 | 1598 | *argptr = (*p == '\'') ? p + 1 : p; |
17763fd9 | 1599 | |
1777feb0 | 1600 | /* Look up entire name. */ |
3a93a0c2 KS |
1601 | name = copy; |
1602 | ||
1603 | cleanup = make_cleanup (null_cleanup, NULL); | |
1604 | canon = cp_canonicalize_string_no_typedefs (copy); | |
1605 | if (canon != NULL) | |
1606 | { | |
1607 | name = canon; | |
1608 | make_cleanup (xfree, name); | |
1609 | } | |
1610 | ||
1611 | sym = lookup_symbol (name, get_selected_block (0), VAR_DOMAIN, 0); | |
1612 | do_cleanups (cleanup); | |
614b3b14 | 1613 | if (sym) |
9ef07c8c | 1614 | return symbol_found (funfirstline, canonical, copy, sym, NULL, NULL); |
c00f8484 KS |
1615 | else |
1616 | { | |
1617 | struct minimal_symbol *msym; | |
1618 | ||
1619 | /* Couldn't find any interpretation as classes/namespaces. As a last | |
1620 | resort, try the minimal symbol tables. */ | |
1621 | msym = lookup_minimal_symbol (copy, NULL, NULL); | |
1622 | if (msym != NULL) | |
1623 | return minsym_found (funfirstline, msym); | |
1624 | } | |
614b3b14 | 1625 | |
c00f8484 | 1626 | /* Couldn't find a minimal symbol, either, so give up. */ |
c00f8484 | 1627 | cplusplus_error (the_real_saved_arg, |
3e43a32a MS |
1628 | "Can't find member of namespace, " |
1629 | "class, struct, or union named \"%s\"\n", | |
614b3b14 DC |
1630 | copy); |
1631 | } | |
1632 | ||
93d91629 DC |
1633 | /* Next come some helper functions for decode_compound. */ |
1634 | ||
1635 | /* Return the symbol corresponding to the substring of *ARGPTR ending | |
1636 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol | |
1637 | name in question, the compound object separator ("::" or "."), and | |
17763fd9 EZ |
1638 | whitespace. Note that *ARGPTR is changed whether or not the |
1639 | lookup_symbol call finds anything (i.e we return NULL). As an | |
1640 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ | |
93d91629 DC |
1641 | |
1642 | static struct symbol * | |
e8eb7bc5 | 1643 | lookup_prefix_sym (char **argptr, char *p, struct symtab *file_symtab) |
93d91629 DC |
1644 | { |
1645 | char *p1; | |
1646 | char *copy; | |
1e5a1abc | 1647 | struct symbol *sym; |
93d91629 DC |
1648 | |
1649 | /* Extract the class name. */ | |
1650 | p1 = p; | |
1651 | while (p != *argptr && p[-1] == ' ') | |
1652 | --p; | |
1653 | copy = (char *) alloca (p - *argptr + 1); | |
1654 | memcpy (copy, *argptr, p - *argptr); | |
1655 | copy[p - *argptr] = 0; | |
1656 | ||
17763fd9 | 1657 | /* Discard the class name from the argptr. */ |
93d91629 DC |
1658 | p = p1 + (p1[0] == ':' ? 2 : 1); |
1659 | while (*p == ' ' || *p == '\t') | |
1660 | p++; | |
1661 | *argptr = p; | |
1662 | ||
17763fd9 | 1663 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
1777feb0 | 1664 | argptr->"inA::fun". */ |
17763fd9 | 1665 | |
e8eb7bc5 | 1666 | sym = lookup_symbol (copy, get_search_block (file_symtab), STRUCT_DOMAIN, 0); |
1e5a1abc KS |
1667 | if (sym == NULL) |
1668 | { | |
1669 | /* Typedefs are in VAR_DOMAIN so the above symbol lookup will | |
1670 | fail when the user attempts to lookup a method of a class | |
1671 | via a typedef'd name (NOT via the class's name, which is already | |
1672 | handled in symbol_matches_domain). So try the lookup again | |
1673 | using VAR_DOMAIN (where typedefs live) and double-check that we | |
1674 | found a struct/class type. */ | |
1675 | struct symbol *s = lookup_symbol (copy, 0, VAR_DOMAIN, 0); | |
e0881a8e | 1676 | |
1e5a1abc KS |
1677 | if (s != NULL) |
1678 | { | |
1679 | struct type *t = SYMBOL_TYPE (s); | |
e0881a8e | 1680 | |
1e5a1abc KS |
1681 | CHECK_TYPEDEF (t); |
1682 | if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
1683 | return s; | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | return sym; | |
93d91629 DC |
1688 | } |
1689 | ||
4224873a DC |
1690 | /* This finds the method COPY in the class whose type is T and whose |
1691 | symbol is SYM_CLASS. */ | |
1692 | ||
1693 | static struct symtabs_and_lines | |
7efd8fc2 TT |
1694 | find_method (int funfirstline, struct linespec_result *canonical, |
1695 | char *saved_arg, | |
e8eb7bc5 KS |
1696 | char *copy, struct type *t, struct symbol *sym_class, |
1697 | struct symtab *file_symtab) | |
4224873a DC |
1698 | { |
1699 | struct symtabs_and_lines values; | |
46be51c4 | 1700 | struct symbol *sym = NULL; |
78a11fb4 | 1701 | int i1; /* Counter for the symbol array. */ |
4224873a DC |
1702 | struct symbol **sym_arr = alloca (total_number_of_methods (t) |
1703 | * sizeof (struct symbol *)); | |
1704 | ||
78a11fb4 DC |
1705 | /* Find all methods with a matching name, and put them in |
1706 | sym_arr. */ | |
4224873a | 1707 | |
e8eb7bc5 KS |
1708 | i1 = find_methods (t, copy, SYMBOL_LANGUAGE (sym_class), sym_arr, |
1709 | file_symtab); | |
4224873a | 1710 | |
418c7cf7 JK |
1711 | /* If we were given a specific overload instance in COPY, defer the field |
1712 | acceptance till the strcmp_iw verification below, even if we found just | |
1713 | a single field with that name. */ | |
1714 | if (i1 == 1 && strchr (copy, '(') == NULL) | |
4224873a DC |
1715 | { |
1716 | /* There is exactly one field with that name. */ | |
1717 | sym = sym_arr[0]; | |
1718 | ||
1719 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1720 | { | |
1721 | values.sals = (struct symtab_and_line *) | |
1722 | xmalloc (sizeof (struct symtab_and_line)); | |
1723 | values.nelts = 1; | |
1724 | values.sals[0] = find_function_start_sal (sym, | |
1725 | funfirstline); | |
1726 | } | |
1727 | else | |
1728 | { | |
15550d6b | 1729 | values.sals = NULL; |
4224873a DC |
1730 | values.nelts = 0; |
1731 | } | |
1732 | return values; | |
1733 | } | |
1734 | if (i1 > 0) | |
1735 | { | |
94af9270 KS |
1736 | /* If we were given a specific overload instance, use that |
1737 | (or error if no matches were found). Otherwise ask the user | |
1738 | which one to use. */ | |
c00f8484 | 1739 | if (strchr (copy, '(')) |
94af9270 KS |
1740 | { |
1741 | int i; | |
c00f8484 KS |
1742 | char *name; |
1743 | char *canon; | |
d03a3acf | 1744 | struct cleanup *cleanup; |
e0881a8e | 1745 | |
c00f8484 KS |
1746 | /* Construct the proper search name based on SYM_CLASS and COPY. |
1747 | SAVED_ARG may contain a valid name, but that name might not be | |
1748 | what is actually stored in the symbol table. For example, | |
1749 | if SAVED_ARG (and SYM_CLASS) were found via an import | |
1750 | ("using namespace" in C++), then the physname of | |
1751 | SYM_CLASS ("A::myclass") may not be the same as SAVED_ARG | |
1752 | ("myclass"). */ | |
1753 | name = xmalloc (strlen (SYMBOL_NATURAL_NAME (sym_class)) | |
1754 | + 2 /* "::" */ + strlen (copy) + 1); | |
1755 | strcpy (name, SYMBOL_NATURAL_NAME (sym_class)); | |
1756 | strcat (name, "::"); | |
1757 | strcat (name, copy); | |
3a93a0c2 | 1758 | canon = cp_canonicalize_string_no_typedefs (name); |
d03a3acf | 1759 | if (canon != NULL) |
94af9270 | 1760 | { |
c00f8484 | 1761 | xfree (name); |
d03a3acf | 1762 | name = canon; |
d03a3acf | 1763 | } |
c00f8484 | 1764 | cleanup = make_cleanup (xfree, name); |
94af9270 | 1765 | |
d03a3acf KS |
1766 | for (i = 0; i < i1; ++i) |
1767 | { | |
94af9270 KS |
1768 | if (strcmp_iw (name, SYMBOL_LINKAGE_NAME (sym_arr[i])) == 0) |
1769 | { | |
1770 | values.sals = (struct symtab_and_line *) | |
1771 | xmalloc (sizeof (struct symtab_and_line)); | |
1772 | values.nelts = 1; | |
1773 | values.sals[0] = find_function_start_sal (sym_arr[i], | |
1774 | funfirstline); | |
d03a3acf | 1775 | do_cleanups (cleanup); |
94af9270 KS |
1776 | return values; |
1777 | } | |
94af9270 KS |
1778 | } |
1779 | ||
dcf9f4ab JK |
1780 | cplusplus_error (saved_arg, _("the class `%s' does not have " |
1781 | "any method instance named %s"), | |
1782 | SYMBOL_PRINT_NAME (sym_class), copy); | |
94af9270 KS |
1783 | } |
1784 | ||
4224873a DC |
1785 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); |
1786 | } | |
1787 | else | |
1788 | { | |
12907978 | 1789 | if (copy[0] == '~') |
4224873a DC |
1790 | cplusplus_error (saved_arg, |
1791 | "the class `%s' does not have destructor defined\n", | |
1792 | SYMBOL_PRINT_NAME (sym_class)); | |
1793 | else | |
1794 | cplusplus_error (saved_arg, | |
1795 | "the class %s does not have any method named %s\n", | |
12907978 | 1796 | SYMBOL_PRINT_NAME (sym_class), copy); |
4224873a DC |
1797 | } |
1798 | } | |
1799 | ||
f3c39e76 DC |
1800 | \f |
1801 | ||
1802 | /* Return the symtab associated to the filename given by the substring | |
58438ac1 | 1803 | of *ARGPTR ending at P, and advance ARGPTR past that filename. */ |
f3c39e76 DC |
1804 | |
1805 | static struct symtab * | |
58438ac1 | 1806 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed) |
f3c39e76 DC |
1807 | { |
1808 | char *p1; | |
1809 | char *copy; | |
94cd26f8 | 1810 | struct symtab *file_symtab; |
f3c39e76 DC |
1811 | |
1812 | p1 = p; | |
1813 | while (p != *argptr && p[-1] == ' ') | |
1814 | --p; | |
1815 | if ((*p == '"') && is_quote_enclosed) | |
1816 | --p; | |
1817 | copy = (char *) alloca (p - *argptr + 1); | |
1818 | memcpy (copy, *argptr, p - *argptr); | |
a04257e6 | 1819 | /* It may have the ending quote right after the file name. */ |
0e0b460e KS |
1820 | if ((is_quote_enclosed && copy[p - *argptr - 1] == '"') |
1821 | || copy[p - *argptr - 1] == '\'') | |
f3c39e76 DC |
1822 | copy[p - *argptr - 1] = 0; |
1823 | else | |
1824 | copy[p - *argptr] = 0; | |
1825 | ||
1826 | /* Find that file's data. */ | |
94cd26f8 DC |
1827 | file_symtab = lookup_symtab (copy); |
1828 | if (file_symtab == 0) | |
f3c39e76 | 1829 | { |
b96e2927 PA |
1830 | if (!have_full_symbols () && !have_partial_symbols ()) |
1831 | throw_error (NOT_FOUND_ERROR, | |
3e43a32a MS |
1832 | _("No symbol table is loaded. " |
1833 | "Use the \"file\" command.")); | |
109c3e39 | 1834 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy); |
f3c39e76 DC |
1835 | } |
1836 | ||
1837 | /* Discard the file name from the arg. */ | |
edb2aadf AR |
1838 | if (*p1 == '\0') |
1839 | return file_symtab; | |
f3c39e76 DC |
1840 | p = p1 + 1; |
1841 | while (*p == ' ' || *p == '\t') | |
1842 | p++; | |
1843 | *argptr = p; | |
1844 | ||
94cd26f8 | 1845 | return file_symtab; |
f3c39e76 DC |
1846 | } |
1847 | ||
9ef07c8c TT |
1848 | /* Look up a function symbol in *ARGPTR. If found, advance *ARGPTR |
1849 | and return the symbol. If not found, return NULL. */ | |
1850 | ||
1851 | static struct symbol * | |
1852 | find_function_symbol (char **argptr, char *p, int is_quote_enclosed) | |
1853 | { | |
1854 | char *p1; | |
1855 | char *copy; | |
1856 | struct symbol *function_symbol; | |
1857 | ||
1858 | p1 = p; | |
1859 | while (p != *argptr && p[-1] == ' ') | |
1860 | --p; | |
1861 | if ((*p == '"') && is_quote_enclosed) | |
1862 | --p; | |
1863 | copy = (char *) alloca (p - *argptr + 1); | |
1864 | memcpy (copy, *argptr, p - *argptr); | |
1865 | /* It may have the ending quote right after the file name. */ | |
1866 | if ((is_quote_enclosed && copy[p - *argptr - 1] == '"') | |
1867 | || copy[p - *argptr - 1] == '\'') | |
1868 | copy[p - *argptr - 1] = 0; | |
1869 | else | |
1870 | copy[p - *argptr] = 0; | |
1871 | ||
1872 | function_symbol = lookup_symbol (copy, get_selected_block (0), | |
1873 | VAR_DOMAIN, 0); | |
1874 | if (!function_symbol || SYMBOL_CLASS (function_symbol) != LOC_BLOCK) | |
1875 | return NULL; | |
1876 | ||
1877 | /* Discard the file name from the arg. */ | |
1878 | p = p1 + 1; | |
1879 | while (*p == ' ' || *p == '\t') | |
1880 | p++; | |
1881 | *argptr = p; | |
1882 | ||
1883 | return function_symbol; | |
1884 | } | |
1885 | ||
84fba31b DC |
1886 | \f |
1887 | ||
1888 | /* This decodes a line where the argument is all digits (possibly | |
1889 | preceded by a sign). Q should point to the end of those digits; | |
1890 | the other arguments are as usual. */ | |
1891 | ||
1892 | static struct symtabs_and_lines | |
1893 | decode_all_digits (char **argptr, struct symtab *default_symtab, | |
7efd8fc2 | 1894 | int default_line, struct linespec_result *canonical, |
88d262ca | 1895 | struct symtab *file_symtab, char *q) |
84fba31b DC |
1896 | |
1897 | { | |
1898 | struct symtabs_and_lines values; | |
1899 | struct symtab_and_line val; | |
1900 | ||
1901 | enum sign | |
1902 | { | |
1903 | none, plus, minus | |
1904 | } | |
1905 | sign = none; | |
1906 | ||
1907 | /* We might need a canonical line spec if no file was specified. */ | |
46be51c4 | 1908 | int need_canonical = (file_symtab == NULL) ? 1 : 0; |
84fba31b DC |
1909 | |
1910 | init_sal (&val); | |
1911 | ||
6c95b8df PA |
1912 | val.pspace = current_program_space; |
1913 | ||
84fba31b DC |
1914 | /* This is where we need to make sure that we have good defaults. |
1915 | We must guarantee that this section of code is never executed | |
1916 | when we are called with just a function name, since | |
1917 | set_default_source_symtab_and_line uses | |
a04257e6 | 1918 | select_source_symtab that calls us with such an argument. */ |
84fba31b | 1919 | |
88d262ca | 1920 | if (file_symtab == 0 && default_symtab == 0) |
84fba31b | 1921 | { |
a04257e6 | 1922 | /* Make sure we have at least a default source file. */ |
84fba31b DC |
1923 | set_default_source_symtab_and_line (); |
1924 | initialize_defaults (&default_symtab, &default_line); | |
1925 | } | |
1926 | ||
1927 | if (**argptr == '+') | |
1928 | sign = plus, (*argptr)++; | |
1929 | else if (**argptr == '-') | |
1930 | sign = minus, (*argptr)++; | |
1931 | val.line = atoi (*argptr); | |
1932 | switch (sign) | |
1933 | { | |
1934 | case plus: | |
1935 | if (q == *argptr) | |
1936 | val.line = 5; | |
88d262ca | 1937 | if (file_symtab == 0) |
84fba31b DC |
1938 | val.line = default_line + val.line; |
1939 | break; | |
1940 | case minus: | |
1941 | if (q == *argptr) | |
1942 | val.line = 15; | |
88d262ca | 1943 | if (file_symtab == 0) |
84fba31b DC |
1944 | val.line = default_line - val.line; |
1945 | else | |
1946 | val.line = 1; | |
1947 | break; | |
1948 | case none: | |
1949 | break; /* No need to adjust val.line. */ | |
1950 | } | |
1951 | ||
1952 | while (*q == ' ' || *q == '\t') | |
1953 | q++; | |
1954 | *argptr = q; | |
88d262ca DC |
1955 | if (file_symtab == 0) |
1956 | file_symtab = default_symtab; | |
84fba31b DC |
1957 | |
1958 | /* It is possible that this source file has more than one symtab, | |
1959 | and that the new line number specification has moved us from the | |
88d262ca DC |
1960 | default (in file_symtab) to a new one. */ |
1961 | val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL); | |
84fba31b | 1962 | if (val.symtab == 0) |
88d262ca | 1963 | val.symtab = file_symtab; |
84fba31b | 1964 | |
6c95b8df | 1965 | val.pspace = SYMTAB_PSPACE (val.symtab); |
84fba31b DC |
1966 | val.pc = 0; |
1967 | values.sals = (struct symtab_and_line *) | |
1968 | xmalloc (sizeof (struct symtab_and_line)); | |
1969 | values.sals[0] = val; | |
1970 | values.nelts = 1; | |
1971 | if (need_canonical) | |
1972 | build_canonical_line_spec (values.sals, NULL, canonical); | |
ed0616c6 | 1973 | values.sals[0].explicit_line = 1; |
84fba31b DC |
1974 | return values; |
1975 | } | |
f3c39e76 | 1976 | |
614b3b14 DC |
1977 | \f |
1978 | ||
14e91ac5 DC |
1979 | /* Decode a linespec starting with a dollar sign. */ |
1980 | ||
1981 | static struct symtabs_and_lines | |
1982 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, | |
7efd8fc2 | 1983 | struct linespec_result *canonical, struct symtab *file_symtab) |
14e91ac5 | 1984 | { |
4fa62494 | 1985 | LONGEST valx; |
14e91ac5 DC |
1986 | int index = 0; |
1987 | int need_canonical = 0; | |
1988 | struct symtabs_and_lines values; | |
1989 | struct symtab_and_line val; | |
1990 | char *p; | |
1991 | struct symbol *sym; | |
14e91ac5 DC |
1992 | struct minimal_symbol *msymbol; |
1993 | ||
1994 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1995 | while (*p >= '0' && *p <= '9') | |
1996 | p++; | |
a04257e6 | 1997 | if (!*p) /* Reached end of token without hitting non-digit. */ |
14e91ac5 | 1998 | { |
a04257e6 | 1999 | /* We have a value history reference. */ |
4fa62494 | 2000 | struct value *val_history; |
e0881a8e | 2001 | |
14e91ac5 | 2002 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
4fa62494 UW |
2003 | val_history = access_value_history ((copy[1] == '$') ? -index : index); |
2004 | if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT) | |
3e43a32a MS |
2005 | error (_("History values used in line " |
2006 | "specs must have integer values.")); | |
4fa62494 | 2007 | valx = value_as_long (val_history); |
14e91ac5 DC |
2008 | } |
2009 | else | |
2010 | { | |
2011 | /* Not all digits -- may be user variable/function or a | |
a04257e6 | 2012 | convenience variable. */ |
14e91ac5 | 2013 | |
a04257e6 | 2014 | /* Look up entire name as a symbol first. */ |
2570f2b7 | 2015 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
46be51c4 | 2016 | file_symtab = (struct symtab *) NULL; |
14e91ac5 DC |
2017 | need_canonical = 1; |
2018 | /* Symbol was found --> jump to normal symbol processing. */ | |
2019 | if (sym) | |
9ef07c8c | 2020 | return symbol_found (funfirstline, canonical, copy, sym, NULL, NULL); |
14e91ac5 | 2021 | |
a04257e6 | 2022 | /* If symbol was not found, look in minimal symbol tables. */ |
14e91ac5 | 2023 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
a04257e6 | 2024 | /* Min symbol was found --> jump to minsym processing. */ |
14e91ac5 DC |
2025 | if (msymbol) |
2026 | return minsym_found (funfirstline, msymbol); | |
2027 | ||
a04257e6 | 2028 | /* Not a user variable or function -- must be convenience variable. */ |
4fa62494 | 2029 | if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx)) |
3e43a32a MS |
2030 | error (_("Convenience variables used in line " |
2031 | "specs must have integer values.")); | |
14e91ac5 DC |
2032 | } |
2033 | ||
2034 | init_sal (&val); | |
2035 | ||
a04257e6 | 2036 | /* Either history value or convenience value from above, in valx. */ |
88d262ca | 2037 | val.symtab = file_symtab ? file_symtab : default_symtab; |
4fa62494 | 2038 | val.line = valx; |
14e91ac5 | 2039 | val.pc = 0; |
6c95b8df | 2040 | val.pspace = current_program_space; |
14e91ac5 DC |
2041 | |
2042 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
2043 | values.sals[0] = val; | |
2044 | values.nelts = 1; | |
2045 | ||
2046 | if (need_canonical) | |
2047 | build_canonical_line_spec (values.sals, NULL, canonical); | |
2048 | ||
2049 | return values; | |
2050 | } | |
2051 | ||
bca02a8a DC |
2052 | \f |
2053 | ||
0f5238ed TT |
2054 | /* A helper for decode_line_1 that tries to find a label. The label |
2055 | is searched for in the current block. | |
9ef07c8c TT |
2056 | FUNCTION_SYMBOL is the enclosing function; or NULL if none |
2057 | specified. | |
0f5238ed TT |
2058 | COPY is the name of the label to find. |
2059 | CANONICAL is the same as the "canonical" argument to decode_line_1. | |
2060 | RESULT is a pointer to a symtabs_and_lines structure which will be | |
2061 | filled in on success. | |
2062 | This function returns 1 if a label was found, 0 otherwise. */ | |
2063 | ||
2064 | static int | |
9ef07c8c TT |
2065 | decode_label (struct symbol *function_symbol, char *copy, |
2066 | struct linespec_result *canonical, | |
7efd8fc2 | 2067 | struct symtabs_and_lines *result) |
0f5238ed TT |
2068 | { |
2069 | struct symbol *sym; | |
9ef07c8c TT |
2070 | struct block *block; |
2071 | ||
2072 | if (function_symbol) | |
2073 | block = SYMBOL_BLOCK_VALUE (function_symbol); | |
2074 | else | |
2075 | { | |
2076 | block = get_selected_block (0); | |
2077 | for (; | |
2078 | block && !BLOCK_FUNCTION (block); | |
2079 | block = BLOCK_SUPERBLOCK (block)) | |
2080 | ; | |
2081 | if (!block) | |
2082 | return 0; | |
2083 | function_symbol = BLOCK_FUNCTION (block); | |
2084 | } | |
0f5238ed | 2085 | |
9ef07c8c | 2086 | sym = lookup_symbol (copy, block, LABEL_DOMAIN, 0); |
0f5238ed TT |
2087 | |
2088 | if (sym != NULL) | |
9ef07c8c | 2089 | *result = symbol_found (0, canonical, copy, sym, NULL, function_symbol); |
0f5238ed TT |
2090 | |
2091 | return sym != NULL; | |
2092 | } | |
2093 | ||
88d262ca | 2094 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
58438ac1 | 2095 | look in that symtab's static variables first. */ |
bca02a8a DC |
2096 | |
2097 | static struct symtabs_and_lines | |
7efd8fc2 TT |
2098 | decode_variable (char *copy, int funfirstline, |
2099 | struct linespec_result *canonical, | |
58438ac1 | 2100 | struct symtab *file_symtab) |
bca02a8a | 2101 | { |
3a93a0c2 | 2102 | char *name, *canon; |
bca02a8a | 2103 | struct symbol *sym; |
3a93a0c2 | 2104 | struct cleanup *cleanup; |
bca02a8a DC |
2105 | struct minimal_symbol *msymbol; |
2106 | ||
3a93a0c2 KS |
2107 | name = copy; |
2108 | cleanup = make_cleanup (null_cleanup, NULL); | |
2109 | canon = cp_canonicalize_string_no_typedefs (copy); | |
2110 | if (canon != NULL) | |
2111 | { | |
2112 | name = canon; | |
2113 | make_cleanup (xfree, name); | |
2114 | } | |
2115 | ||
2116 | sym = lookup_symbol (name, get_search_block (file_symtab), VAR_DOMAIN, 0); | |
bca02a8a DC |
2117 | |
2118 | if (sym != NULL) | |
3a93a0c2 KS |
2119 | { |
2120 | do_cleanups (cleanup); | |
2121 | return symbol_found (funfirstline, canonical, copy, sym, | |
2122 | file_symtab, NULL); | |
2123 | } | |
bca02a8a | 2124 | |
3a93a0c2 KS |
2125 | msymbol = lookup_minimal_symbol (name, NULL, NULL); |
2126 | do_cleanups (cleanup); | |
bca02a8a DC |
2127 | |
2128 | if (msymbol != NULL) | |
2129 | return minsym_found (funfirstline, msymbol); | |
2130 | ||
b96e2927 PA |
2131 | if (!have_full_symbols () |
2132 | && !have_partial_symbols () | |
2133 | && !have_minimal_symbols ()) | |
2134 | throw_error (NOT_FOUND_ERROR, | |
2135 | _("No symbol table is loaded. Use the \"file\" command.")); | |
109c3e39 | 2136 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy); |
bca02a8a DC |
2137 | } |
2138 | ||
2139 | ||
14e91ac5 DC |
2140 | \f |
2141 | ||
413dad4d DC |
2142 | /* Now come some functions that are called from multiple places within |
2143 | decode_line_1. */ | |
2144 | ||
2145 | /* We've found a symbol SYM to associate with our linespec; build a | |
2146 | corresponding struct symtabs_and_lines. */ | |
2147 | ||
2148 | static struct symtabs_and_lines | |
7efd8fc2 | 2149 | symbol_found (int funfirstline, struct linespec_result *canonical, char *copy, |
9ef07c8c TT |
2150 | struct symbol *sym, struct symtab *file_symtab, |
2151 | struct symbol *function_symbol) | |
413dad4d DC |
2152 | { |
2153 | struct symtabs_and_lines values; | |
2154 | ||
2155 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 2156 | { |
1777feb0 | 2157 | /* Arg is the name of a function. */ |
50641945 FN |
2158 | values.sals = (struct symtab_and_line *) |
2159 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
2160 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
2161 | values.nelts = 1; | |
2162 | ||
2163 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
2164 | the line containing the parameters or thereabouts, not | |
2165 | the first line of code. */ | |
2166 | ||
2167 | /* We might need a canonical line spec if it is a static | |
2168 | function. */ | |
88d262ca | 2169 | if (file_symtab == 0) |
50641945 | 2170 | { |
2570f2b7 | 2171 | struct blockvector *bv = BLOCKVECTOR (SYMBOL_SYMTAB (sym)); |
413dad4d | 2172 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
e0881a8e | 2173 | |
94af9270 | 2174 | if (lookup_block_symbol (b, copy, VAR_DOMAIN) != NULL) |
413dad4d | 2175 | build_canonical_line_spec (values.sals, copy, canonical); |
50641945 | 2176 | } |
50641945 FN |
2177 | return values; |
2178 | } | |
413dad4d DC |
2179 | else |
2180 | { | |
62853458 | 2181 | if (SYMBOL_CLASS (sym) == LOC_LABEL && SYMBOL_VALUE_ADDRESS (sym) != 0) |
413dad4d DC |
2182 | { |
2183 | /* We know its line number. */ | |
2184 | values.sals = (struct symtab_and_line *) | |
2185 | xmalloc (sizeof (struct symtab_and_line)); | |
2186 | values.nelts = 1; | |
9ef07c8c | 2187 | init_sal (&values.sals[0]); |
2570f2b7 | 2188 | values.sals[0].symtab = SYMBOL_SYMTAB (sym); |
413dad4d | 2189 | values.sals[0].line = SYMBOL_LINE (sym); |
9ef07c8c | 2190 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym); |
0f5238ed | 2191 | values.sals[0].pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); |
9ef07c8c TT |
2192 | values.sals[0].explicit_pc = 1; |
2193 | ||
2194 | if (canonical) | |
2195 | { | |
2196 | canonical->special_display = 1; | |
2197 | canonical->canonical = xmalloc (sizeof (char *)); | |
2198 | canonical->canonical[0] | |
2199 | = xstrprintf ("%s:%s", | |
2200 | SYMBOL_NATURAL_NAME (function_symbol), | |
2201 | SYMBOL_NATURAL_NAME (sym)); | |
2202 | } | |
2203 | ||
413dad4d DC |
2204 | return values; |
2205 | } | |
62853458 | 2206 | else if (funfirstline) |
dcf9f4ab JK |
2207 | { |
2208 | /* NOT_FOUND_ERROR is not correct but it ensures COPY will be | |
2209 | searched also as a minimal symbol. */ | |
2210 | ||
2211 | throw_error (NOT_FOUND_ERROR, _("\"%s\" is not a function"), copy); | |
2212 | } | |
62853458 TT |
2213 | else if (SYMBOL_LINE (sym) != 0) |
2214 | { | |
2215 | /* We know its line number. */ | |
2216 | values.sals = (struct symtab_and_line *) | |
2217 | xmalloc (sizeof (struct symtab_and_line)); | |
2218 | values.nelts = 1; | |
2219 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
2220 | values.sals[0].symtab = SYMBOL_SYMTAB (sym); | |
2221 | values.sals[0].line = SYMBOL_LINE (sym); | |
2222 | values.sals[0].pspace = SYMTAB_PSPACE (SYMBOL_SYMTAB (sym)); | |
2223 | return values; | |
2224 | } | |
413dad4d DC |
2225 | else |
2226 | /* This can happen if it is compiled with a compiler which doesn't | |
2227 | put out line numbers for variables. */ | |
2228 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
2229 | and return? For example, "info line foo" could print | |
2230 | the address. */ | |
8a3fe4f8 | 2231 | error (_("Line number not known for symbol \"%s\""), copy); |
413dad4d DC |
2232 | } |
2233 | } | |
50641945 | 2234 | |
413dad4d DC |
2235 | /* We've found a minimal symbol MSYMBOL to associate with our |
2236 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 2237 | |
413dad4d DC |
2238 | static struct symtabs_and_lines |
2239 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
2240 | { | |
bccdca4a UW |
2241 | struct objfile *objfile = msymbol_objfile (msymbol); |
2242 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
413dad4d | 2243 | struct symtabs_and_lines values; |
bccdca4a | 2244 | CORE_ADDR pc; |
413dad4d DC |
2245 | |
2246 | values.sals = (struct symtab_and_line *) | |
2247 | xmalloc (sizeof (struct symtab_and_line)); | |
2248 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
714835d5 UW |
2249 | (struct obj_section *) 0, 0); |
2250 | values.sals[0].section = SYMBOL_OBJ_SECTION (msymbol); | |
bccdca4a UW |
2251 | |
2252 | /* The minimal symbol might point to a function descriptor; | |
2253 | resolve it to the actual code address instead. */ | |
2254 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
2255 | values.sals[0].pc, | |
2256 | ¤t_target); | |
2257 | if (pc != values.sals[0].pc) | |
2258 | values.sals[0] = find_pc_sect_line (pc, NULL, 0); | |
2259 | ||
413dad4d | 2260 | if (funfirstline) |
059acae7 | 2261 | skip_prologue_sal (&values.sals[0]); |
e48883f7 | 2262 | |
413dad4d DC |
2263 | values.nelts = 1; |
2264 | return values; | |
50641945 | 2265 | } |
7efd8fc2 TT |
2266 | |
2267 | void | |
2268 | init_linespec_result (struct linespec_result *lr) | |
2269 | { | |
2270 | memset (lr, 0, sizeof (*lr)); | |
2271 | } |